Cultivator



March 1, 1927. 1,619,797

J. MARTIKAINEN CULTIVATOR Filed Aug. 17, 1921 [hi anion Jan? ll/fainerz Pltente'd Mar. 1, 1927.

- UNITED, STATES PATENT OFFICE.-

J'ANNE MABTIKAINEN, OF RYTTYLA, FINLAND, ASSIGNOB TO J. ALFRED ANDERSON,

OF SUFFOLK COUNTY,

massaonusm'r's.

CULTIVATOR.

Application filed August 17, 1921. Serial No. 498,020.

This invenionrelates to a rotary plow attachment, and more particularly to one.

of this class, that is applicable to existing tractors, such for instance as the well known Fordson.

It is an object of the IIIVGIItIOII to produce a simple and eflective plow attachment of such arrangement that it may be applled to existing tractors for temporary or extended use, and which may be applied thereto simple means not requiring physical c an ges in the said tractor,- or the services of a skilled mechanic-to accomplish the attaching thereof.

It is a further object of the mventlon to produce a simple plow attachment for tractors, the cutting portions of which may have vertical movement relatively to the tractor when operatin on rough or hllly ground.

A further 0 ject of the invention 1s the production of a plow attachment WlllCh not only loosens the soil and thereby accomplishes the purpose of a plow, but which also ulverizes the soil, thus loosened, and thereby accomplishes the purpose of a harrow.

To the-attainment. of the above ob ects the invention consists in certain novel features of construction and arrangement of parts which will be fully understood from a descri tion of the drawings and the claim hereina or given.

Referring to the drawings:

Figure 1 represents in slde elevation, in diagrammatic manner, a plow attachment embodying the invention, and of a construction applicable to the well known Fordson tractor.

Figure 2 isa top plan view of Figure 1 certain of the parts being broken away.

Figure 3 is a detail partly in section taken on approximately the line 33 Figure 1.

Like characters represent like parts throughout the several figures of the drawi he drawings herewith illustrate the invention in one of the many forms in which it may be applied and it will be understood that it is not intended to limit it to the precise construction and arrangement shown as various changes might be madetherein fr without de arting from its spirit and sco The cutting blades or knives two of wh1ch are conventionally shown In Figure 1 of the drawings as mounted on heads 2, are preferably flat thin blades detachably mounted to'said heads.

The frame 10 is adapted to be raised and lowered by meansof a rope or chain 15 passing over a suitably supported pulley 16, to a drum 17 operated through the hand crank 18. During the plowing operation the frame 10 will assume the position shown in Figure- 1 wherein the said frame at its rear end is supported by the wheel 19, the chain 15 being sufiiciently slack to permit of hinge movement between the tractor and said frame when working over uneven or humpy ground.

The drawin Figure 2 shows three cutter heads 2 and time shafts 3 to drive them, and they derivetheir power from the worm shaft 20, of the tractor 14 see Figure 1, which may be extended to enter the me g 9 in which is located a gear 5, fast on said shaft 20, and in mesh with the ear 6 the shaft of which extends rearwar y and is coupled to the center one of the shafts 3, by a flexible coupling 4.

The said casing 9 also houses the intermediate or idler gears 7 each of which meshes with a gear 8 the shafts of which also extend rearwardly and are con led to the wing shafts 3 by similar couplings 4. From the foregoing it will be seen that the cutters or knives 1 receive their ower from the tractor worm shaft, throng the gear train and flexiblev couplings, and

shafts 3.

The frame 10 is pivoted at 11 to the rigid frame 12 which in turn is secured to the tractor 14 by the bolts '13, and strap 13 as seen in Figure 1 of the drawings.

I claim: 7

A cultivator arranged to be connected to and operated by a tractor and comprising a frame arranged to be rigidly attached to the rear of a tractor; a second frame arranged to be pivotall mounted on said rigid frame; a plurality o shafts mounted in said second ame; a gear train mounted on said rigid frame and arranged to be driven by a worm shaft of saidtractor, certain of the gears of said train having shafts rearwardly extending therefrom which have flexible con- 5 pling connection with the shafts mounted in said second frame whereby said givoted frame and said shafts mounted therem may be raised and lowered, each ofsaid shafts of said second .frame having cutting heads mounted thereon.

In testimony whereof I aflix my signature.

JANNE MARTIKAINEN. 

